Core barrel



1,515,171 I P. M. REILLY coma: BARREL- Mm 114 mm Filed Nov. 22' 1922 2 Sheath-556st 1 P. M. REILLY CORE BARREL Filed Nov. 22 922 2 Sheets-Sheet. 2

Patented Nov. ii, 192%.

UNETEE SKATES raisin earner series.

PATRICK M. REILLY, OF SOUTH CHICAGO, ILLINOIS.

V oonr. BARREL.

Application filed November 22, 1922. Seriafl No. 602,517.

absorbed from the metal when the ingot molds are being produced and which will operate properly with a minimum of eX- pense for repair parts in service, and consists of only three primary parts, namely a main stave, a base upon which said stave is mounted, and a secondary stave loosely secured to the said main stave.

A further object of my invention is the production of a core barrel composed of few and simple parts which are easily molded in themselves and which when fitted together to form a unit make a complete and strong structure without likelihood of getting out of order and failing to perform its proper function.

Another and further object of my invention is the provision of a core barrel which is securely held in position upon the base for the ingot mold for the pouring operation and which is readily removable therefrom when the core barrel is removed from the mold.

the core with a flask and pouring the molten metal in the opening between the flask and the core. When the fluid metal has set, then the core is removed and 1t- 18 to this particular feature that my invention is particularly directed. As will be understood, the metal in cooling contracts and binds itself tightly upon the core and it is usually necessary to use a great deal of force in stripping the ingot mold, from the core and it has been the practice to form these: cores of a number of staves built up around a tapered core member and slidably mounted thereon so that when the'staves are raised, the core barrel contracts thus allowing for its easy removal from the ingot mold. The use of a great number of parts of which these core barrels are composed and the absorption of the heat from the molten metal poured therearound and the consequent warping of these parts,

has made it diflicult to secure the ingot mold in position on the stem during the pouring operation. My invention has to do with the overcoming of these dilficulties and the producing of a core barrel which will perform its function pro-perly at all times with a minimum of repair.

These and other objects of my invention will be more fully and better understood by reference to the accompanying drawings and in which Figure 1 is a side elevational view of my improved core barrel;

Figure 2 is a vertical sectional view taken on a line at right angles tothe core barrel as shown in Figure 1;

Figure 3 is a vertical sectional view of the main stave detached from the base;

Figure 4C is a vertical sectional view of the loose stave;

Figure 5 is a sectional view through the bottom of the ingot mold and showing the base; and

Figure 6 is a top view of the mold showing the separating wedges in position between the two mold sections.

Referring now specifically to the drawings, a base or cope 10 is shown upon which the main stave 11 of the core barrel is mounted, the said stave having an extensible base portion 12 at the bottom thereof of the full size of the core barrel and upon which a secbad! ond stave 13 rests and which extends in vertical relation with the main stave or section 11 ot the core barrel and is slightly movable relatively thereto. The base of the stave 11 has a hole 141 extending therethrough adapted to register with the hole 15 extending through the base 10 and through which a pin'1'6 passes, the said pin having a 'lrey 17 inserted through the lower end thereof which serves to hold the main pin 16in position and holds the section .13 of the core barrel firmly onto the base 10. A pair of bolts 18 and 19 are provided whichprevent the main stave 13 from rotating about the pin 14 and a pair of openings '20,'-20 are provided in register with a second pair ofopen- 'in gs 21, '21 "in the base through which the gas escapes at the bottom of the mold, or new sand :or other particles inside the core barrel can drop onto the base. The loose stave '11 is positioned upon the projection .12 and is secured to the =1nain stave 13 by means of a horizontally extending bolt 22 at the lower portion of the "barrel and a secondbolt 23 at the upper portion thereof.

"The loose stave 13 'has an inwardly projeo'ting portion "2.4 which extends into a recess 25- 011 the main stave 11, so "that it is heldiin proper 'POSltlOll'llPOll the main stave P13 and prevented iirom rotating about the said stave '11. The main stave has an upwardly extending "post 26 secured thereto with-a transversely extending hole '27 therein within which a clevis or a pin can 'be placed tor :purposes of securing a hoisting mechanism thereto when itis desired to remove the core barrel from an ingot mold. The post 26'has a vertically extending opening 28 therethrough which :is in register with aihole 29 in the projecting lug Qlllso as to allow the gases to escape during "the pouring Gt the metal "lormin 'g the ingot mold. For purposes of spreading the .mold a pair of wedges 30 and .31 are inserted between thesections 1'1 and at their upper edges, this limit of movenient be'ing controlled by the bolt 23 .in order'to provide the proper formation of the proper sized mold and after the metal hassolidiiied, the weclges'fiO and 31 are 'renioved'allowiirg the core barrel to collapse so that the same may be removped from the ingotmold. I

In operation of the device, "the section is secured to the base '10 and coated with sand which is dried and the mold built up around it. A metal is thereupon poured around "the corebarrel and after 'beidoming solid the wedges 3'0 and 31 are removed allowing the sections of the core barrel to collapse at the upper portion, the bolt 23 being'inserted'in recesses i32gand 33 formed in the sides of the two members 11 and 13 respectively *so that the end of'the .b'olt does not come :in contact with the hardened metal. Thetwo sections thereupon collapse The loosening of the core barrel at the top allows only a slight amount of surface of the core barrel at the base to remain in contact with the metal so that the core barrel is easily removed from the mold.

While I have described more or less precisely the details of construction, 1 do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and the substitution o1 equivalents as circumstances may suggest or render expedient without depart ing from the spirit or scope of my invention.

I claim 1. In combination, a core barrel comprising a main .stave having -an integrally formed enlarged proj ecting bottom portion, a second stave seated upon the projecting bottom portion of the main stave, "bolts exp tendingthrougheach of said staves limiting their outward movement and wedges adapted to be inserted between the said staves whereby the staves are "forced outward from each other to the limit fixed by "the said bolts.

2. In combination, a core barrel comprising a .main stave having an integrally formed enlarged 'base portion, a second stave seated upon said projecting base portion, transversely extending bolts securing the said staves together and wedge members adapted to be inserted between the said staves for forcing them apart to the limit fixed the said :bolts.

In combination, a core barrel comprising a main stave having an integrally formed enlarged base portion, a second stave seated upon said. projecting base portion of the first mentioned stave, transversely extend ing bolts securing the said staves together and wedge members adapted to be inserted between the said staves for forcing them apart to the limit fixed "by thesaid bolts.

1. In combination, a core barrel comprising a main stave having an integrally formed enlarged projecting bottom portion, a second stave aoapte'l to be seated upon said projecting bottomportion, transversely extending .loolts securing the said 'staves together, wedge members adaptedtobe inserted between said .staves for forcing them aparhthe said second stave having a projec tion atits upper part ad'aptedt'o cooperate with arecess '"formedin said first mentioned stave, whereby the relative vertical movement of the second stave is limited.

5. 1n combination, a core barrel comprising a main stave having an integrally bottom portion of the first mentioned stave, transversely extending bolts securing the said staves together, Wedge members adapted to be inserted between said staves for forcing them apart, the said second stave having a projection at its upper part adapted to cooperate With a recess formed in said first mentioned stave, whereby the relative vertical movement of the second stave is limited, a base, a pin extending through said base portion and the enlarged bottom portion of the said main stave, and a removable pin inserted through said holding pin.

Signed at South Chicago, Illinois, this 16th day of November, 1922.

PATRICK M. REILLY. 

